try to search for a solution before asking others to search instead.
if you had put something like "default language" in the search box, you
would already have found the answer by now...
random questions in a single thread is not the way the forum works.
it makes it difficult for the search engine to work. your second question
has nothing to do with the first. someone who might help you with your
second question would not see it unless they also saw your first question.
please open a new thread for your second question. i'm sorry, i don't
understand it in any case.